二里岗时期主要葬式有()。
A.曲肢葬
B.侧身葬
C.仰身直肢葬
D.俯身直肢葬
参考答案:C, D
下列适合用于液体干燥的设备有()。
A.沸腾干燥机
B.喷雾干燥机
C.流化床干燥机
D.气流干燥机
—Why couldn’t they meet us at five o’clock?
—Because they were delayed by _________.
A.heavy traffic
B.heavy traffics
C.crowded traffic
D.crowded traffics